Estimating Products Worksheet
Practice estimating products of multi-digit numbers and decimals using rounding and compatible numbers for 8th graders.
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Estimating Products
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Read each question carefully and estimate the product. Show your rounding or compatible numbers used for estimation.
1. To estimate 47 x 23, we can round 47 to and 23 to . The estimated product is .
2. To estimate 189 x 31, we can round 189 to and 31 to . The estimated product is .
3. The estimated product of 62 x 198 is after rounding to the nearest ten and hundred respectively.
4. Which pair of compatible numbers would you use to estimate 387 ÷ 9?
300 ÷ 10
360 ÷ 9
400 ÷ 10
450 ÷ 9
5. Estimate the product of 5.8 x 12.3.
60
72
600
720
6. Explain two different ways to estimate the product of 29 x 51. Which method do you think is better and why?
7. The estimated product of 495 x 21 using rounding to the nearest hundred and ten is 10,000.
True
False
8. When estimating 7.2 x 9.8, rounding both numbers to the nearest whole number gives an estimated product of 70.
True
False
9. A store sells 18 cases of soda each day. Each case contains 24 cans. Estimate the total number of cans sold in 7 days.
10. Use the number line below to help you round 3.7 to the nearest whole number.
3.7 rounded to the nearest whole number is .